* {
    margin: 0;
    padding: 0;
}

body {
    font-family: 黑体;
}

.wrapper {
    width: 640px;
    border: 1px solid #FF0000;
    padding: 20px;
    margin: 0 auto;
}

h1 {
    font-size: 20px;
    text-align: center;
    margin: 10px 0 20px;
}

p{
    font-size: 15px;
    text-indent: 2em;
    margin: 1.5em 0;
    line-height: 1.5em;
}

h1+p{
    border-top: 1px solid #FF0000;
    border-bottom: 1px solid blue;
    padding: 10px 0;
    text-indent: 0;
    color: blue;
    font-size: 12px;
}

.summary{
    color: blue;
}

ul{
    /*取消列表前的点*/
    list-style-type: none;
    text-indent: 2em;
    font-size: 12px;
}

ul li{
    line-height: 2em;
}

a{
    color: #666;
    text-decoration: none;
}

a:hover{
    color: #000;
    text-decoration: underline;
}
